In chlorination of benzene,the reactive species is

Benzene reacts with chlorine to form benzene hexachloride in the presence of:

What is the correct order of reactivity towards electrophilic substitution for the compounds: Aniline $(I)$,Benzene $(II)$,and Nitrobenzene $(III)$?

Aromatic hydrocarbons mostly exhibit .......

Nitrobenzene can be prepared from benzene by using a mixture of conc. $HNO_3$ and conc. $H_2SO_4$. In the nitrating mixture,$HNO_3$ acts as a

Identify the correct statements for a ring system to exhibit aromaticity.
$(i)$ It must not be planar.
$(ii)$ It must possess $(4n+2) \pi$-electrons.
$(iii)$ It must be planar.
$(iv)$ It must possess $4n \pi$-electrons.
The correct answer is